B3311331313231311331322331333132313233313233313133313331322132313232231   >>    B331133131323131133132233133313231323331323331313331333132213231323223   <<    B3311331313231311331322331333132313233313233313133313331322132313232233   >>      B3311331313231311331322331333132313233313233313133313331322132313232232   >>